World time zones

Travelmath provides a database of time zones all over the world.
You can use this data to check the local time, or verify the time
difference when you cross time zones during a trip. Daylight savings
is automatically adjusted based on the local time zone. The tz
database or zoneinfo database uses the closest city, rather than the
more common Eastern, Central, Mountain or Pacific time zones in the
United States. Countries often change their daylight saving rules,
so please help us stay current by letting us know if you find any
pages that need updates.